WO2022004109A1 - バックアップ電源装置及びバックアップ電源装置の制御方法 - Google Patents

バックアップ電源装置及びバックアップ電源装置の制御方法 Download PDF

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Publication number
WO2022004109A1
WO2022004109A1 PCT/JP2021/016585 JP2021016585W WO2022004109A1 WO 2022004109 A1 WO2022004109 A1 WO 2022004109A1 JP 2021016585 W JP2021016585 W JP 2021016585W WO 2022004109 A1 WO2022004109 A1 WO 2022004109A1
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WO
WIPO (PCT)
Prior art keywords
voltage
rectifier
power supply
secondary battery
backup power
Prior art date
Application number
PCT/JP2021/016585
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
克彦 玉木
恭行 勝部
尚章 近田
Original Assignee
Fdk株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fdk株式会社 filed Critical Fdk株式会社
Priority to US18/002,854 priority Critical patent/US20230246478A1/en
Priority to CA3184304A priority patent/CA3184304A1/en
Priority to EP21833954.7A priority patent/EP4175118A4/de
Publication of WO2022004109A1 publication Critical patent/WO2022004109A1/ja

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/14—Balancing the load in a network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a backup power supply device and a control method for the backup power supply device.
  • a storage battery and a rectifier that matches it have been used conventionally. Further, as a storage battery, a lead battery is widely used.
  • the rectifier may be overloaded and the output voltage of the rectifier may drop momentarily.
  • the rectifier lowers the output voltage due to overload, it may be detected as an abnormality in the load device or the occurrence of a low voltage in the breaker.
  • a lightweight, compact and long-life battery has tended to be used instead of a lead battery. Further, such a battery is equipped with a control board in order to perform high-performance control, and requires control by a microcomputer or the like.
  • An object of the present invention is to provide a backup power supply device that efficiently supplies power by microcomputer control and a control method thereof.
  • the backup power supply device is charged by a rectifier that generates a predetermined voltage, and the load device that operates by feeding power from the rectifier is described by the rectifier.
  • a backup power supply that supplies power when the power supplied to the load device is insufficient including a secondary battery charged by the power from the rectifier, a control unit that controls charging and discharging of the secondary battery, and the rectifier.
  • the control unit includes an output voltage detection unit that detects the output voltage from the battery, and the control unit has a charging current for charging the secondary battery when the output voltage drops below a first threshold voltage lower than the predetermined voltage. It is characterized in that at least one of reduction and stopping of charging of the secondary battery is performed.
  • the backup power supply device is charged by a rectifier that generates power of a predetermined voltage, and the power supplied from the rectifier to the load device is supplied to the load device operated by the power supply from the rectifier. It is a backup power supply device that supplies power when there is a shortage, and detects a secondary battery charged by the power from the rectifier, a control unit that controls charging / discharging of the secondary battery, and an output voltage from the rectifier.
  • the control unit includes an output voltage detection unit and a battery voltage detection unit that detects the battery voltage of the secondary battery.
  • the secondary battery discharges the load device to the load device for the first hour, and the output voltage returns to the predetermined voltage after the lapse of the first hour. Is characterized in that the discharge from the secondary battery to the load device is stopped.
  • the method of the third aspect of the present invention provides a backup power supply device that supplies power to a load device that operates by supplying power from a rectifier that generates power of a predetermined voltage when the power supplied from the rectifier to the load device is insufficient.
  • the step of charging the backup power supply device by the rectifier and the charging of the backup power supply device are stopped when the output voltage from the rectifier drops below the first threshold voltage lower than the predetermined voltage. It is characterized by having a step of performing.
  • the power supplied from the rectifier to the load device is insufficient for the load device operated by the power supply from the rectifier while being charged by the rectifier that generates the power of a predetermined voltage. It is a method of controlling a backup power supply device that sometimes supplies power, and when the output voltage from the rectifier drops below a third threshold voltage lower than the predetermined voltage, the output voltage of the backup power supply device is from the rectifier. It is characterized by having a step of supplying power from the backup power supply device to the load device for a first period on condition that the voltage is higher than the output voltage.
  • the insufficient power of the supplied power is discharged from the secondary battery. It can be supplied more quickly and the load device can continue to operate.
  • the backup power supply device 1 according to the embodiment of the present invention will be described with reference to FIG. It is needless to say that the present invention is not limited to the embodiments described below, and various modifications can be made within the scope of the claims.
  • the backup power supply device 1 is connected to a power supply line L that electrically connects the rectifier 2 and the load device 3.
  • Rectifier 2 is an AC-DC converter for generating and outputting the DC power of the normal voltage V 0 by using an external commercial power.
  • the voltage V 0 is 26.2V ⁇ 28.8V.
  • the load device 3 is a device that operates by being supplied with power from the rectifier 2.
  • the load device 3 comprises a circuit breaker installed at a railroad crossing, and opens and closes a rod attached to the circuit breaker according to the operation of a train.
  • the load device 3 has a rated voltage of 24 V.
  • the backup power supply device 1 includes an input / output unit 11, a secondary battery 12, a DC-DC converter 13, a constant current control circuit 14, and a control unit 15.
  • the input / output unit 11 is connected to a power supply line L that supplies electric power from the rectifier 2 to the load device 3.
  • the backup power supply device 1 When the backup power supply device 1 is charged, the output voltage from the rectifier 2 is applied to the input / output unit 11.
  • the backup power supply device 1 supplies power to the load device 3 as a backup power source, the battery voltage V b of the secondary battery 12 becomes the voltage of the input / output unit 11.
  • the secondary battery 12 is configured by connecting a plurality of alkaline secondary battery cells such as nickel-hydrogen secondary battery cells in series or in parallel.
  • alkaline secondary battery cells such as nickel-hydrogen secondary battery cells in series or in parallel.
  • Vb battery voltage
  • boost that was boosted to the full charge can become the output voltage V 0 of the secondary battery 12 of the rectifier 2, and outputs toward the secondary battery 12 via the constant current control circuit 14 It is a voltage converter.
  • a charging switch 16 for turning on / off the charging of the secondary battery 12 is provided between the constant current control circuit 14 and one electrode of the secondary battery 12.
  • a discharge switch 17 for turning on / off the discharge of the secondary battery 12 is provided between the other electrode of the secondary battery 12 and the input / output unit 11.
  • a diode D is inserted between the discharge switch 17 and the input / output unit 11, the anode is connected to the other electrode of the secondary battery 12, and the cathode is connected to the input / output unit 11.
  • Control unit 15 includes made from the microcomputer, the output voltage detecting section 18 for detecting a voltage V i at the input and output unit 11, and a battery voltage detection unit 19 that detects a battery voltage V b of the secondary battery 12.
  • Control unit 15 the voltage V i at the input and output unit 11, based on the battery voltage V b of the secondary battery 12, and controls the on-off of the charging switch 16 and discharge switch 17.
  • Voltage V i at the input and output unit 11 is equal to the output voltage V 0 which the rectifier 2, the control unit 15, by monitoring the voltage V i of the input-output unit 11, the backup power supply unit 1, a rectifier 2 and the load It is possible to grasp the operating state of the device 3.
  • FIG. Figure 2 shows the time variation of the voltage V i at the input and output unit 11 of the backup power supply device 1.
  • the voltage V 0 is a voltage value output when the rectifier 2 is operating normally
  • the voltage V c is a first threshold voltage or a fourth threshold voltage
  • the control unit 15 turns off the charging switch 16. This is the voltage value at which the charging of the secondary battery 12 is stopped.
  • the voltage V s is a voltage value at which the control unit 15 determines that the state of the rectifier 2 is a power failure, and is a voltage lower than V c.
  • the voltage V r is a voltage value as a reference for restarting charging of the secondary battery 12 as the second threshold voltage, and is set higher than the voltage V c. Both the voltages V c and V s are lower than the voltage V 0. In this embodiment, V c is set to 24 V, V s is set to 23 V, and V r is set to 24.5 V.
  • the voltage V i of the input and output portion 11 of the backup power supply device 1 is equal to the voltage V 0.
  • the charging switch 16 is turned on by the control unit 15, and the secondary battery 12 is charged by the electric power from the rectifier 2.
  • the control unit 15 turns off the discharge switch 17 to prevent the secondary battery 12 from being discharged and prepare for future discharge.
  • the overload to the rectifier 2 maximum current flows through the load device 3
  • the voltage V i drops start.
  • the control unit 15 turns off the charging switch 16 and stops charging the secondary battery 12.
  • the current flowing through the load device 3 by, for example, rod Kiru up after time t 2 is returned to normal, the voltage V i is increasing prior to drop to the voltage V s which is determined that the power failure of the rectifier 2 turn, increases at time t 3 to voltage V r, to eventually return to the voltage V 0.
  • the backup power supply device 1 since the stop charging, rectifier 2 the power will be supplied to the backup power supply device 1 during the period from the time t 2 to time t 4, that instead of the backup power supply device 1, is supplied to the load device 3 can.
  • the rectifier 2 can eliminate the overload state in a short time. That is, by stopping the charging of the backup power supply device 1 for a short time, the overload of the rectifier 2 can be eliminated and the operation of the load device 3 can be continued.
  • FIG. 3 shows the time variation of the voltage V i at the input and output unit 11 of the backup power supply device 1.
  • the voltage V 0 is the voltage output when the rectifier 2 is operating normally
  • the voltage V s is the third threshold voltage
  • the control unit 15 determines that the state of the rectifier 2 is a power failure.
  • V s is 23V.
  • the control unit 15 turns on the charging switch 16 and charges the secondary battery 12 with the electric power from the rectifier 2. On the other hand, the control unit 15 turns off the discharge switch 17 to prevent the secondary battery 12 from being discharged, and prepares for future discharge.
  • the control unit 15 determines that a power failure to the rectifier 2 is generated, from the time t 12 to time t 13 after 200 microseconds, secondary in terms of battery voltage V b of the battery 12, it was confirmed that higher than V i, and switches on the discharge switch 17 from oFF to start discharge of the secondary battery 12, from the backup power supply device 1 to the load device 3 Start power supply.
  • the control unit 15 turns off the discharge switch 17 and detects the output voltage of the rectifier 2. If the output voltage of the rectifier 2 at time t 14 has returned to V 0 , the control unit 15 continues to turn off the discharge switch 17 after time t 14 to stop the discharge from the secondary battery 12. Accordingly, power supply from the backup power supply device 1 to the load device 3 is not performed, since the input to the load device 3 is only the power from the rectifier 2, the voltage V i of the input-output unit 11, the output voltage V of the rectifier 2 Equal to 0.
  • the control unit 15 when the output power of the rectifier 2 detected at time t 14 is still less than or equal to the voltage V s , the control unit 15 is set at time t 15 200 microseconds after time t 14. After confirming that the battery voltage V b is higher than the voltage V i , the discharge switch 17 is switched from off to on to start discharging the secondary battery 12 and restart the power supply to the load device 3. Therefore, power is supplied from the backup power supply device 1 to the load device 3 by discharging the secondary battery 12 for 10 seconds from the time t 15 to the time t 16. Thus, 10 seconds from the time t 15 to time t 16, the voltage V i of the input-output unit 11 becomes equal to the battery voltage V b of the secondary battery 12.
  • the control unit 15 turns off the discharge switch 17 and detects the output voltage of the rectifier 2. If the output voltage of the rectifier 2 at time t 16 has returned to V 0 , the control unit 15 continues to turn off the discharge switch 17 after time t 16 to stop the discharge from the secondary battery 12. Accordingly, power supply from the backup power supply device 1 to the load device 3 is not performed, since the input to the load device 3 is only the power from the rectifier 2, the voltage V i of the input-output unit 11, the output voltage V of the rectifier 2 Equal to 0.
  • the power supply period from the backup power supply device 1 is extended.
  • the operation of the load device 3 can be continued.
  • the control unit 15 has tens of tens of tens of rectifier 2 and / or load device 3. It is judged that a failure that cannot be restored normally in about seconds has occurred, and at time t 17 200 microseconds after time t 16 , the discharge switch 17 is switched from off to on and discharge is restarted from the secondary battery 12. Then, power is supplied from the backup power supply device 1 to the load device 3.
  • the voltage V i of the input / output unit 11 after the time t 17 becomes equal to the battery voltage V b of the secondary battery 12.
  • the charging of the secondary battery 12 in the backup power supply device 1 by the electric power of the rectifier 2 is stopped to charge the backup power supply device 1.
  • the electric power used may also be supplied to the load device 3.
  • the backup power supply device 1 when an overload state occurs in the rectifier 2, charging of the backup power supply device 1 is stopped, all the power output by the rectifier 2 is supplied to the load device 3, and the operation of the load device 3 is continued. Let me. When the output voltage of the rectifier 2 further decreases, the backup power supply device 1 also supplies power to the load device 3 to compensate for the power shortage of the load device 3 and continue the operation of the load device 3.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Stand-By Power Supply Arrangements (AREA)
PCT/JP2021/016585 2020-06-29 2021-04-26 バックアップ電源装置及びバックアップ電源装置の制御方法 WO2022004109A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US18/002,854 US20230246478A1 (en) 2020-06-29 2021-04-26 Backup power supply device and method for controlling backup power supply device
CA3184304A CA3184304A1 (en) 2020-06-29 2021-04-26 Backup power supply and method for controlling backup power supply
EP21833954.7A EP4175118A4 (de) 2020-06-29 2021-04-26 Reservestromversorgungsvorrichtung und verfahren zur steuerung der reservestromversorgungsvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-112189 2020-06-29
JP2020112189A JP2022011203A (ja) 2020-06-29 2020-06-29 バックアップ電源装置及びバックアップ電源装置の制御方法

Publications (1)

Publication Number Publication Date
WO2022004109A1 true WO2022004109A1 (ja) 2022-01-06

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Application Number Title Priority Date Filing Date
PCT/JP2021/016585 WO2022004109A1 (ja) 2020-06-29 2021-04-26 バックアップ電源装置及びバックアップ電源装置の制御方法

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US (1) US20230246478A1 (de)
EP (1) EP4175118A4 (de)
JP (1) JP2022011203A (de)
CA (1) CA3184304A1 (de)
WO (1) WO2022004109A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412821A (en) * 1987-07-06 1989-01-17 Fujitsu Ltd Rush current preventive circuit
JP2001186689A (ja) * 1999-12-24 2001-07-06 Mitsubishi Electric Corp 無停電電源装置
JP2007209056A (ja) * 2006-01-31 2007-08-16 Power System:Kk 蓄電装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2756984B1 (fr) * 1996-12-05 1999-01-08 Gec Alsthom Syst Et Serv Alimentation de secours destinee a suppleer provisoirement a une carence d'une source d'alimentation principale
US7872450B1 (en) * 2004-12-29 2011-01-18 American Power Conversion Corporation Adaptive battery charging
CN103337901B (zh) * 2013-06-28 2016-03-30 华为技术有限公司 不间断供电的方法和不间断电源
TWI600254B (zh) * 2016-06-17 2017-09-21 台達電子工業股份有限公司 電源轉換裝置及其控制方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412821A (en) * 1987-07-06 1989-01-17 Fujitsu Ltd Rush current preventive circuit
JP2001186689A (ja) * 1999-12-24 2001-07-06 Mitsubishi Electric Corp 無停電電源装置
JP2007209056A (ja) * 2006-01-31 2007-08-16 Power System:Kk 蓄電装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4175118A4 *

Also Published As

Publication number Publication date
EP4175118A1 (de) 2023-05-03
US20230246478A1 (en) 2023-08-03
EP4175118A4 (de) 2024-06-26
JP2022011203A (ja) 2022-01-17
CA3184304A1 (en) 2022-01-06

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